Rabbi Avraham Galanti
Rabbi Avraham Galanti, who other rabbis described as outstanding in his level of holiness, and who was a student of the great kabbalist Rabbi Moshe Cordovero in the 16th century, explained aspects of the Three Oaths in his book Zechus Avos Merit of the Patriarchs where he recounts how some Jews in Portugal wanted to revolt against the kingdom rather than submit to forced conversion. A rabbi quoted the verses from Song of Songs to the people who wanted to revolt, and pointed to the Talmudic tractate Ketuboth p. 111 which states that G-d made the Jewish People take three Oaths – one was that they should not rebel against G-d by rebelling against the nations. Thereafter the Jews submitted to death rather than forced conversion. Although the description in Ketuboth does not say that the Oaths involve directly rebelling against G-d, it is clear that the very violation of these Oaths is rebellion against G-d himself.